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--></style></head><body lang=EN-US link=blue vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Try pushing in the clutch when resonating. This will provide a some dampening and change the rotating parts.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Harold<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:eyera3000@gmail.com">i erbs</a><br><b>Sent: </b>Sunday, May 2, 2021 3:56 PM<br><b>To: </b><a href="mailto:michaelsalter@gmail.com">Michael Salter</a><br><b>Cc: </b><a href="mailto:healeys@autox.team.net">Ahealey help</a><br><b>Subject: </b>Re: [Healeys] Resonance at 2900 rpm</p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><br>The engine was balanced when I rebuilt it. Replaced the flywheel to accommodate a late model clutch cover, but did not balance the new flywheel.</p><div><p class=MsoNormal>How do you check a harmonic balance?</p><div><p class=MsoNormal>Ira Erbs<br>1959 AH 100-6<br>1967 MGB<br>Milwaukie, OR</p></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Sun, May 2, 2021, 3:51 PM Michael Salter <<a href="mailto:michaelsalter@gmail.com">michaelsalter@gmail.com</a>> wrote:</p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>"Yes on engine".</span></p><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Well to be honest that opens a whole can of worms. </span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Engine balance would certainly be the first suspicion and that involves a total rebuild.</span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Sometimes an exhaust system can develop a "resonance " which if caused by a muffler will usually result in it cracking eventually. </span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>I've encountered various other sources ... </span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Badly balanced and mounted alternator.</span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Disintegrating front balancer</span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'> & Loose flywheel</span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Come to mind.</span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>Time for some diagnosis.</span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-size:9.5pt;font-family:"Arial",sans-serif'>M</span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Sun., May 2, 2021, 6:38 p.m. i erbs, <<a href="mailto:eyera3000@gmail.com">eyera3000@gmail.com</a>> wrote:</p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal>Yes on engine.</p><div><p class=MsoNormal style='margin-bottom:12.0pt'>Yes to switching flywheel to BJ8 and special disk for toyota </p><div><p class=MsoNormal>Ira Erbs<br>1959 AH 100-6<br>1967 MGB<br>Milwaukie, OR</p></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Sun, May 2, 2021, 11:18 AM Bob Spidell <<a href="mailto:bspidell@comcast.net">bspidell@comcast.net</a>> wrote:</p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'>Did you have your engine balanced at rebuild? If you did, have you <br>changed out the clutch or flywheel since?<br><br>On 5/2/2021 11:01 AM, i erbs via Healeys wrote:<br>> Howdy all,<br>> Been driving my car a lot lately and I've been reminded that I get <br>> some load resonance between 2800 and 2900 rpm, in any gear. Have <br>> Smitty 5 speed.<br>> Any ideas?<br>><br>> Ira Erbs<br>> 1959 AH 100-6<br>> 1967 MGB<br>> Milwaukie, OR<br>><br><br>_______________________________________________<br>Support Team.Net <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive">http://autox.team.net/archive</a><br><br><a href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/eyera3000@gmail.com">http://autox.team.net/mailman/options/healeys/eyera3000@gmail.com</a></p></blockquote></div></blockquote></div></blockquote></div><p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:9.6pt'>_______________________________________________<br>Support Team.Net <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive">http://autox.team.net/archive</a><br><br><a href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a><br><a href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com">http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>